In the end, I finally decided to use a simple palette for this dark young. But I kept with the theme of an earthy color (the dark green body) and an "ethereal" color (the sky blue tentacle tips.)\
All these figures painted up really fast (all done in two days.) I'm putting together my next order. So far, that list only includes a Mi-go and a proto-shoggoth. I may add the Dunwich horror as well as a Yithian (my favorite of all the Lovecraftian creatures).